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\textbf{Use Case iButton 1:  Detailed Description}\\\\
Use Case Name:  Observe Logged Weather Data\\
Scenario: Observe data textually\\
Brief Description:  With the System running, the User shall request
logged weather data from the iButton in textual form.\\\\
Actors:  User\\
Related Use Cases:\\
\textbf{Use Case iButton 5:  }\emph{The User Shall Modify the
temperature and calculated data units}\\
\textbf{Stakeholders: }User\\
\textbf{Preconditions:  }The system is running, the data is logged
on the iButton, the iButton is connected to the System and ready
for retrieval'\\
\textbf{Postconditions:  }The weather data is presented to the user
in textual, row, column form.\\\\
\textbf{Flow of Events}\\
\begin{tabular}{|l|l|}\hline
\textbf{User} & \textbf{System}\\\hline
1.  Requests specific logged weather & \\
data in appropriate units (See & \\
\textbf{Use Case iButton 5}) & 2.  Returns the requested\\
 & weather data in tabular form,\\
 & labled with the type and units at\\
 & the top of the table.  Different\\
 & weather data separated into separate\\
 & columns\\\hline
\end{tabular}\\\\
\textbf{Exception Conditions}\\
1a.  If the data is unretrievable, then the system shall note that
to the user, giving the user the option to clear the memory on the
iButton for logging a new set of data.\\
2a.  If the user decides to change units, then the system shall
return the requested data in the specific units, displaying the
data again in tabular form.
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